I'm planning on tinting my windows but a bit confused.
Vehicles first used on 1 April 1985 or later
The front windscreen must let at least 75% of light through and the front side windows must let at least 70% of light through.
I just want to tint the side and rear windows not windscreen. The tint I'm going to get on ebay says 20%. Not sure if that means it lets 20% light through or blocks 20% light.